One clean hit. Joseph Parker reckons that’s all it will take to dispose of Anthony Joshua.

The pair of unbeaten heavyweights clash in Cardiff on Sunday (NZT) and both were talking themselves up when they faced off at the final press conference.

Joshua is adamant that Parker will end up the same way all 20 of his professional opponents have – on the canvas.

Anthony Joshua v Joseph ParkerVenue: Principality Stadium, Cardiff Date: Saturday, 31 March
Coverage: Live text commentary on the Online Sports website and mobile app
Anthony Joshua says he “has no fear” of Joseph Parker but his opponent’s desire to improve himself has inspired him to take the fight seriously.

The Briton, 28, says he took heed of the 26-year-old New Zealander’s determination to put elbow injuries behind him after surgery in December.

“If I hadn’t I probably wouldn’t have taken it too seriously,” he said.

“I swear to you, my coach knows, I probably would have just gone through the motions in training camp. But that’s not the mindset.

“I’ve heard he wants to improve, better himself. He’s had injuries he wants to overcome.

“I want to prove I’m better than my last few titles [fights].”

Last April, Joshua produced the performance of his career to add the WBA title to his IBF crown with an enthralling knockout win over former unified heavyweight champion Wladimir Klitschko at Wembley Stadium.

The Anthony Joshua vs Joseph ParkerWatford-born fighter said that contest, in front of a post-war record 90,000 fans at the national stadium, was a bigger test than the one presented by undefeated Parker on Saturday.

“I watched the fight back last night,” said Joshua. “There’s a physical and mental preparation and that had everything in it.

WBC titleholder Deontay Wilder will be ringside as Joshua fights Parker, and could try to pursue a huge unification bout with the winner.

Promotional teams for the undefeated American and Joshua met in late 2017, but Wilder’s manager Shelly Finkel has said Joshua’s promoter Eddie Hearn has not been in touch this year.

Joshua said he has put all thoughts of Wilder out of his mind in the build-up to Saturday’s fight.